File:1907 Pittsburgh Pirates.jpg - Wikipedia
Pittsburgh Pirates Logo and symbol, meaning, history, PNG, brand
Pittsburgh Pirates - Wikipedia
The Pittsburgh Pirates in the dugout at the Huntington Avenue Grounds, 1903 World Series - Digital Commonwealth
Buck Leonard – Society for American Baseball Research
Pittsburgh Pirates National Postal Museum
Albert Pujols is having the worst 37-year-old's season in MLB history
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Joe Marshall – Society for American Baseball Research
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History of the Pittsburgh Pirates - Wikipedia